Improvement in mechanical motions



2 Sheets--Sheet 1.

G. MNTAGUE. Mechanical Motions.

Patented June 2,1874.

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Mechanical Motions. N0.l5l,500. Patentedluneznam.

UNITED STATES CHARLES MONTAGUE,

PATENT OEEIoE.v

OF BOSTON, MASSACHUSETTS, ASSIGNOR TO CYRIL C. CHILD, OF SAME PLACE.

IMPROVEMENT IN MECHANICAL MOTIONS.

Specicatio'n forming part of Letters Patent No. 151,500, dated June 2, 1874; application filed February 12, 1&74.

To all 'whom it may concern:

Be it known that I, CHARLES MoNTAGUE, of Boston, Massachusetts, have invented a Mechanical Motion, of which the following is a specification:

The nature and object of my invention consist in converting regular into irregular or intermittent rotary motion. Y

Figure I is an end elevation. Fig. II is a plan view of the face of disk L, nearest wheel M, with connections attached. Fig. III is an end elevation of same. Fig. IV is a plan view of the face of wheel M. Fig. V is an end elevation of wheel M. Fig. Vl is a plan view of xed cam N. Fig. VII is a cross-section of fixed cam-N, showing guide or groove j'. Fig. VIII is a plan view of disk L, showing a variation in the arrangement of connections. Fig. 1X is an end elevation of disk L. Fig. X is a plan view of whee` M, showing variation in the arrangement of connections. Fig. Xl is an end elevation of wheel M.

A Al are standards supporting a cra-nkshaft, B, on which is fastened disk or crank L. Loose on the same shaft is a wheel, M, which is connected with disk L by a lever, a, pivoted on disk L, one end of the lever having a sind which operates loosely in a slot, b,

in wheel M, while the other end of the lever, has a stud, d, which passes through a hole in disk L and enters a groove fin xed cam N attached to standard A', the hole in disk L being merely to allow the stud to enter groove j", and no contact existing' between the stud and disk. On wheel M, Figs. VIII, IX, X, Xl, is' a link, c, pivoted at one end to the wheel, while the other end extends to and is connected by a pin to 011e end of lever a, the

' other end of the lever having the stud d extending, as before described, into the groove j' in xed cam N, the parts comprised in the Figs. VIII, 1X, X, XI showing a variation in the arrangement of connections, by which a moditication in the character of the motion imparted to wheel M is obtained.

The operation of these parts is as follows: Motion is communicated to crank-shaft B, causing the revolution of the disk L, which is fastened thereto. Fivoted to disk L, and revolving with it, is the lever a, the stud at one end of which projects inwardly to groove f in the fixed cam N, oy which it receives a -vibrating movement during its revolution with the shaft. The other end of the lever, having a stud which has a loose or working fit in the slot of wheel M, produces upon the wheel a rotary motion, which isfaster at some portions ot the revolution and slower at other portions than the speed of rotation of disk L, the variability of motion depending on the shape of the slot in wheel M, and that of the groove f in xed cam N.

By the addition to the mechanism described of link o, as represented in Figs. VIII, IX, X, XI, one end of the link being pivoted to wheel M, and the other end extending to and pivoted to that end of lever a whose stud operates in the slot of wheel M, and which lastmentioned stud is in these gures dispensed with, the revolution of disk L causes a different amount and character of variability in the rotating speed of wheel M, which at some part of its revolution stops entirely.

This device is adapted to all mechanism in which it is desired to produce a rotary motion at varying speed during each revolution.

A large number of modiiications may be made in the form of the connections between the disk and wheel, and it is not essential that they should be placed exactly on the saine line of axis, the principle of the invention consisting in the use of a/guide or cam which operates upon suitable connect-ions between two or more wheels or disks revolving in the same direction, whereby a completed rotation of one wheel or disk causes a completed rotation of the other wheel or disk at a different speed during a portion or portions of its revolution.

In an yapplication for patent for an improved printingpress, filed March 19, 1873, I have shown a combination of this device, with different form of connections between the wheel and disk from those herein shown, with the cylinder of a printing-press.

I claim as my invention- The instrumentality ofa fixed guide, groove,

or cam in vibrating connections between two wheels or disks, whereby the regular rotation of the driving-wheel is converted into irregular or intermittent rotation in the driven wheel, substantially as described.

CHARLES MONTAGUE.

Vitnesses FRANK D. WrTI-IERELL, C. VAT'rs L. MONTAGUE. 

